baber/WOPTO huggingface dataset:
Patent GB-526567-A (GB)
Title: Improvements in or relating to sound recording
IPC: G11B7/00
Filed: 1939-03-20
Abstract: 526,567. Optical sound recording. RADIO CORPORATION OF AMERICA. March 20, 1939, No. 8875. Convention date, March 29, 1938. [Class 40 (ii)] A double density direct positive having little ground noise is made by projecting a narrow beam of light varied in accordance with the sound waves upon a film to expose an area defining the sound waves and projecting an additional beam varied in accordance with the envelope of the sound waves to fall on the filmwithin the said exposed area whereby to expose a portion of said area more densely than the remaining portions or margins of said area. Additional side beams to produce side exposures may also be used. As shown in Fig. 2, an aperture comprising a rectangular part 14A and a triangular part 13A is imaged by a soundoperated galvanometer on a plate 18 formed with two slits 21, 22. The slit 21 produces on the film a variable area record 27, Fig. 3, in the usual way. In conjunction with the slit 22, a shutter 19 is provided controlled by the envelope of the sound whereby inner and outer additional beams are controlled to produce the highly exposed parts 25, 26 on the film. In a modification, Fig. 4, the aperture has an inclined part 13B which produces a Class A push-pull sound record, and the shutter 19 has a flat centre part 30 which produces a continuous highly exposed centre part on the film. In another modification, the shutter is as in Fig. 4, but the aperture part co-operating with the slit 21 is N-shaped to produce a class B push-pull sound record. The records may be played directly ; or may be re-recorded as ordinary negatives from which prints can be made ; or negatives may be printed from the records and positives printed from the negatives ; or " reversal " positives may be printed by reversal from the records.
Patent GB-1218986-A (GB)
Title: Improvements relating to differential voltage angular displacements detector
IPC: G01C19/28
Filed: 1968-02-23
Abstract: 1,218,986. Transformers. SOC. DE FABRICATION D'INSTRUMENTS DE MESURE (S.F.I.M.). 23 Feb., 1968 [23 Feb., 1967], No. 8878/68. Heading H1T. [Also in Division H2] A differential-voltage angular displacement detector comprises a stator 17 and rotor 18 one of which, the stator in the example shown, carries a primary winding 34 and two secondary windings 35, 36. The primary winding is wound in skein form so as to produce alternate pairs of poles of opposite polarity and the secondary windings, also in skein form, link sets of poles, each set comprising one pole from each pair i.e. all the even and odd poles respectively of the 16-pole stator shown. In the magnetic equilibrium position shown in Fig. 1, each pole of the 8-pole rotor spans approximately two stator poles so that the two secondary voltages are equal. Displacement of the rotor in one direction or the other increases or decreases the reluctance of the flux path between the rotor and one or the other of each pair of stator poles resulting in different secondary voltages indicative of the direction and amount of displacement. The two secondary voltages may be summed in opposition.
Patent GB-692234-A (GB)
Title: Process for the catalytic hydrogenation of carbon monoxide
IPC: C07C29/152
Filed: 1951-04-17
Abstract: In the hydrogenation of carbon monoxide to form hydrocarbons and oxygen-containing organic compounds, using an unsupported iron, nickel, or cobalt catalyst, the catalyst is dried for 6-24 hours at a temperature of 150-350 DEG  C. before being reduced or activated (see Group III).  The drying and reduction may take place within the hydrogenation reactor.  Reduced catalyst is arranged in tubes of diameter 20-60 mm. and synthesis gas is passed through at a velocity of more than 50 (and preferably more than 200) cms. per sec., and in amounts greater than 500 (e.g. 1000-2000) vols. of gas per vol. of catalyst per hour; pressures of 10-100 (preferably 15-30) kgs. per sq. cm. may be used.  Exit gas may be recycled with fresh gas, e.g. in a volume ratio of 1-4 : 1.  The heat of reaction is removed by indirect heat exchange with a uniformly-boiling liquid, e.g. ethylene glycol, aniline, nitrobenzene, or a hydrocarbon.ALSO:An unsupported iron, nickel or cobalt catalyst, for use in the hydrogenation of carbon monoxide (see Group IV(b)), is dried for 6-24 hours at a temperature of 150 DEG -350 DEG C before being reduced or activated. Reduction may be effected uniformly and without shrinkage by passing carbon monoxide and/or hydrogen through layers or columns of more than 100 cms. (preferably 400-1000 cms.) in height at a flow velocity of about 100-200 cms. per sec.  The catalyst may be precipitated from a metal salt solution, moulded and pre-dried at 100 DEG -110 DEG C; the further drying and reduction may take place within the hydrogenation reactor.
Patent GB-275288-A (GB)
Title: Improvements relating to combing machines for textile fibres
IPC: D01G19/28
Filed: 1926-04-06
Abstract: 275,288. Nasmith, J. W. April 6, 1926. Combing - machines.-In a combing-machine, in which the waste is removed from the comb cylinder by a brush and is transferred to an aspirator, a doffing-roller 8 is interposed between the brush 6 and the aspirator 11 in such a position that the teeth of the roller pass close to the aspirator which collects the waste on them. Side plates 14 are secured to the frame 17 and support a cover 16. The doffing-roller 8 carries friction discs 29 which rest on the surface of the aspirator and are driven by it. The doffing-roller is carried in semi-circular brackets 22 which can be adjusted round the centre of the aspirator. Extensions 24 of these brackets carry the small stripping-roller 27 in open bearings. The doffing- roller can be lifted from its open bearings 23 and placed on brackets 28 to give access to the brush 6. The arrangement allows a reduction in the speed of rotation of the brush 6 and in the power of the suction in the aspirator.
Patent GB-445643-A (GB)
Title: Improvements in or relating to pressure compensating devices
IPC: B60C23/00
Filed: 1935-03-22
Abstract: 445,643. Valves. MICHELIN & CIE, Clermont Ferrand, Puy de Dome, France. March 22, 1935, No. 9039. Convention date, June 12, 1934. [Class 135] A valve device particularly adapted for use in connection with the twin, multi-tubed or other tyres of a motor vehicle, comprises a hollow body having two chambers each connected to a pressure chamber, orifices arranged in each chamber upon the exterior wall of the hollow body to permit the chambers to communicate with one another and a sleeve of elastic material applied upon the hollow body so as to close the orifices. In the form shown in Fig. 5, a rubber sleeve 10 encircles a tubular body 1 so as to close ports 5, 6. The body is formed with an inflating connection 20 and a double connector 13 communicating at one end with one chamber and at the other end with the other. The inflating connection is formed with a passage 18 leading to the port 5 and to a passage 14<b> leading to one chamber. The other port 6 is connected by a passage 14<a> to the other chamber. As long as the pressures in the two chambers are above a predetermined minimum depending on the tension of the rubber sleeve, the ports 5 and 6 are maintained in communication to equalize the pressures in the two chambers. Should the pressure in one chamber fall unduly the sleeve closes the communication, so maintaining a minimum pressure in the other chamber. In a modified form the enclosing cap 17 is made fluid tight to form a fluid tight chamber about the sleeve connected by ports to the conduit 14<a>. This form operates to maintain one chamber at a pressure a constant amount less than that of the inlet chamber while preventing a return flow into the inlet chamber. A construction is described embodying two of these modified forms with the inflating connection arranged between them. In a further arrangement, Fig. 8, the two chambers 2, 3 are connected by a pair of conduits in parallel, each conduit containing a valve of the first and of the modified construction. The inflating connection is at 20 so that the pressure P<2> in 2 is normally higher than that P<3> in 3, and chamber 2 feeds chamber 3 to maintain this difference until P<2> has fallen to the value which permits the valve A<2> to close. If the pressure P<2> falls a certain amount below P<3> then fluid passes from 3 to 2 through A<1>, B<1> until P<3> reaches the value which permits the valve A<1> to close.
Patent GB-1465978-A (GB)
Title: Drilling or threading unit
IPC: B23Q11/04
Filed: 1974-02-28
Abstract: 1465978 Drilling and threading unit LECHLER APPARATEBAU KG 28 Feb 1974 [23 March 1973] 9054/74 Headings B3C and B3N A drilling or threading unit comprises a casing 10 a spindle 12 a feed for the spindle, an electro-motive spindle drive, a reduction gear 16 and an adjustable torque slip clutch 42-45. Drive from an electric motor to the reduction gear is by toothed belt 51. The reduction gear consists of a sun gear 31 fixedly connected to spindle 12, a second sun wheel 32 normally stationary and planet wheels 33, 34, all of which are mounted in a planet web comprised by members 35, 36. The clutch is a friction disc 42 in engagement with a pressure plate 44 fast with sun wheel 32 and a pressure disc 45. The pressure of disc 45 on disc 42 is adjusted by means of screwing sleeve 50 which acts through cup spring 48 on disc 45. In operation of the embodiment of Fig. 3 when an excessive torque on a drill is felt the clutch disc rotates allowing rotation of sun gear 32 and thus stops rotation of spindle 12. The operation of the threading unit of Fig. 4 is very similar except that the feed of spindle 12 during cutting is by means of nut 52 which is internally threaded and leader 65 which is attached to the spindle and has an external thread in engagement with the nut. Adjustment of the loading on the torque clutch is by rods 61 and screw plug 63.
Patent GB-959464-A (GB)
Title: Arc chamber
IPC: H05H1/50
Filed: 1961-03-13
Abstract: 959,464. Arc blow-torches. WESTINGHOUSE ELECTRIC CORPORATION. March 13, 1961 [April 4, 1960; April 29, 1960], No. 9081/61. Heading H5H. In an arc-heating apparatus, for increasing the enthralpy of a gas, in which an arc between coaxial ring electrodes 4 is rotated by magnetic coils 6, the region defined by the rotating arc is surrounded by a sleeve 14 acting as a heat shield and designed to permit the passage of gas through the arc to a central region which is free from any cooling means and is coaxially disposed with respect to a gas - discharge means. The gas - discharge means shown is a nozzle block 12 for connection to a hypersonic wind tunnel, but other discharge means such as an exhaust tube or vent may be used in other applications such as the magnetohydrodynamic generation of electric power or the fixation and synthesis of chemical compounds. The electrodes 4 may have an arcing surface of copper-tungsten, platinum or irridium, and the power supply is by way of connections 44 and 46 also serving as inlet and outlet for supply of water or oil to cooling coils embedded in the electrodes. The power supply may be D.C. or single or polyphase A.C. In the last case additional ring electrodes 4 are provided for connection to the individual phases. Gas under pressure is admitted through a flange connection 8 and enters the arc chamber through tangential openings 56 in the sleeve 14. An observation window 40 is provided. One or more of the electrodes 4 may be movable.
Patent GB-1456583-A (GB)
Title: Electroplating composition and process
IPC: C25D3/16
Filed: 1974-02-28
Abstract: 1456583 Electro-plating bath additive OXY METAL INDUSTRIES CORP 28 Feb 1974 [28 Feb 1973] 9107/74 Heading C7B A plating bath additive for levelling and/or brightening a metal electro-deposit comprises (A) coumarin or a substituted coumarin, (B) an acidsoluble 1-propynoxy sulphonate and optionally (c) butyne diol. The composition may be supplied as a concentrate. Specified compounds (B) are porpargyl alcohol propane sulphonate and HC#C.CH 2 .O. (CH 2 .CH[CH 2 SO 3 Na].O.) n H, where n = 1 to 4. The plating bath may be an acid Ni bath optionally containing Co salts sufficient to deposit an alloy containing # 80% Ni.
Patent GB-748056-A (GB)
Title: Combination air and water valve for rock drills
IPC: E21B21/01
Filed: 1954-03-29
Abstract: 748,056. Percussive drills. CHICAGO PNEUMATIC TOOL, CO. March 29, 1954 [April 20, 1953], No. 9113/54. Class 124 A pneumatic percussive drill having a water supply tube passing through the ,piston and delivering water to a hollow steel is provided in the backhead with a single valve controlling the supply of water and of air to the piston, the arrangement of the valve being such that water is supplied to the steel before air is admitted to start the percussive action. As shown a drill has a water tube 60 leading from the back head 39, through a bore 62 in the piston 34 to a hollow steel 27. A valve in the back head comprises an air chamber 65 having at one end a connection 69 to a supply of compressed air and at the other a smaller diameter chamber 78 and a valve element 74 slidable in the chamber 78. A spring 80 in the chamber 65 urges the valve element into the closed position. A bush 88 having external grooves 89, 90 with radial holes 92 and 93 is fitted in the chamber 78 and a reduced portion 94 of the valve element 74 is slidable within this bushing. An annular recess 95 is provided in the reduced portion 94 wide enough to bridge the spaced radial holes 92, 93 and having seals 99, 100 at one end and a seal 102 at the other end of the recess. A small movement of the spindle 81 against the spring 80 moves the seal 100 into a position that the holes 92, 93 are both in communication with the recess 95 and water may flow to the drill steel, and further movement admits air to the piston valve, the water being therefore supplied to the steel before percussive action begins. The movement of the valve is controlled by a lever on a handle of the drill. The steel may be rotated by rifle bars and ratchet and means are provided for supplying a metered amount of lubricating oil to the operating air. The main air valve is constructed in such manner that live air may be blown through the water tube.
Patent GB-236664-A (GB)
Title: Improvements relating to the furnaces or fire places of bakers' ovens and the like
IPC: A21B1/40
Filed: 1924-04-11
Abstract: 236,664. Read, W. H., and Clement, R. April 11, 1924. Ash-pits; air supply, regulating.-The ash-pit of a bakers' oven or like furnace is provided with an air admission opening extending along the side or back thereof in addition to the usual opening provided by the ash-pit door in order to reduce the velocity of air flowing through the door, shutters or dampers being provided to regulate the admission of air. As shown in Fig. 2, the side wall of the ash-pit is provided with openings 4 controlled by a shutter 5 having corresponding openings 6. Fig. 3 shows a modification in which the ash-pit wall is provided with a slot 7 controlled by a pivoted plate 8. Two or more rows of slots 4 with shutters 5 or slots 7 with plates 8 may be provided. The reduction in the velocity of the air may be assisted by increasing the depth of the ash-pit.
Patent GB-1261344-A (GB)
Title: Improvements in or relating to materials testing apparatus
Inventor: SCOTT MICHAEL ALAN
IPC: G01M7/00
Filed: 1968-02-26
Abstract: 1,261,344. Acoustic inspection devices. ELECTRICITY COUNCIL. 27 Jan., 1969 [26 Feb., 1968], No. 9251/68. Heading H4D. A materials testing apparatus, e.g. for detecting decay in telegraph poles, comprises a vibrator 11 for applying vibrations through a probe 13 to the material, means for indicating the acceleration or amplitude of movement of the probe, and a spring 17 arranged to bias the probe rigidly against a stop until a predetermined pressure on the vibrator, applied towards the material, overcomes the spring bias so that the probe is then free to vibrate. Probe 13 slides in P.T.F.E. bearings 14, 18. The spring acts on a piezo-electric accelerometer 12 which, with collar 15 and bearing 18, limits the probe movement. The accelerometer output drives a meter 25 via amplifier 24. Decayed poles present a low mechanical impedance to the vibrations and so result in a high meter reading. The vibrator drive oscillator 26 and units 24, 25 may be disposed in a easing 22 having a pistol grip 21 and a dust seal 19. The accelerometer may be mechanically tuned, or the amplifier electrically tuned, to the vibrator frequency (e.g. in the range 40-80 Hz). The probe tip may be screwed or otherwise fixed to the material.
Patent GB-771439-A (GB)
Title: Improvements in photographic folding cameras with lens coupled range-finders
IPC: G03B13/20
Filed: 1952-04-10
Abstract: 771,439. Photographic cameras. KARPF, N., [trading as LINHOF KOMM-GES, V.]. April 10, 1952 [April 12, 1951], No. 9275/52. Class 98(1) In a folding camera having a hinged base plate on which the lens mount is movable for focusing, the lens mount and the movable member of 'a range-finder are coupled by mechanism which causes the member to move in accordance with the movements of the lens mount and which incorporates a cam device rotatably mounted on the base plate 'and connected with the lens mount for rotation in accordance with movements of the lens mount, a pivoted lever connected with the member being resiliently urged into contact with a cam surface on the cam device and being movable thereby for effecting the adjustment of the rangefinder. As shown, the hinged base board 1 has slidable in tracks 4 thereon a bed carrying a lens mount and movable for focusing by actuation of a knob 3. A stop pin 8 depending from the bed engages an arm on a plate 7 pivoted at 5 to the base board, and urged clockwise by a spring 20. A co-axial plate 6 having three cam surfaces and three radial shoulders is disposed so that a selected one of the shoulders engages the plate 7 so that the two plates rotate in unison during the lens focusing movement. The corresponding opposite cam surface, which is shaped in accordance with the focal length of the lens in use, being engaged under the action of a spring 10 by a two-part lever 12 hinged at 11 and pivoted at 13 in the camera body. The lever 12 has an arm 14 engaging a pivoted arm 15 engaged with a stop pin on the pivoting mirror of a range-finder 19 whereby the lens focusing movement is coupled with the adjustment of the rangefinder. In a modification, the movement of the lever 12 is transmitted by a further lever to a pivoted arm carrying the rangefinder mirror and also having an arm engaging a pivoted pointer co-operating with a scale in a transparent housing. Two or more cam plates mounted one above the other may be used.
Patent GB-526830-A (GB)
Title: Improvements in or relating to telecommunication exchange systems
IPC: H04M15/08
Filed: 1939-03-24
Abstract: 526,830. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., and WRIGHT, E. P. G. March 24, 1939, No. 9321. [Class 40 (iv)] In a system in which information as to partially or completely set up ' connections is recorded at a common exchange, the information is automatically routed to different recording equipments in accordance with the origin or destination of the call, in order to minimize mechanical or manual sorting of the tickets. In the case of distribution of the information in accordance with the destination of a call, the invention facilitates the handling of delayed calls by different demand operators. Specifications 484,647, 510,012 and 513,285 are referred to. Information received over incoming selectors ITS is stored in circuits SRS from which it is transferred over a discriminating circuit TC to a selected printer TM. Provision is made for 3 groups of calling or called exchanges and circuit TC operates one or both of relays A, D rm11 to identify the group and.mark it in bank of RM1 which starts to hunt. When test relay T operates, TSM hunts until an idle printer marked, in tsm2 of a group marked by rm12 in tsm1 operates P. When T operates, a circuit was closed for stepping RM2 by timed pulses, the circuit being opened by P when an idle printer is found. If there is no idle printer in the marked group, RM2 steps on to mark an overflow group of printers over rm22, P responding to an idle one as before. In both cases, H follows P and homes switch RM2. The tickets from the overflow printers are distributed manually or otherwise.
Patent GB-199176-A (GB)
Title: A method of, and packages for, putting up lump sugar for use at table
IPC: B65D75/58
Filed: 1922-04-01
Abstract: 199,176. Fairrie, G., and Fairrie &. Co., Ltd. April 1, 1922. Packing sugar.-Two or more cubes or rectangularly shaped pieces of sugar are placed together with their abutting ends transverse to the length of the packet to be made, and are wrapped in paper, the ends being secured by adhesive or otherwise. The packet is broken open by twisting the ends in opposite directions to rupture the paper at the abutting ends of the pieces.
Patent GB-270070-A (GB)
Title: Improvements in or relating to electric arc lamps
IPC: H05B31/00
Filed: 1926-04-09
Abstract: 270,070. Boardman, R. V. April 9, 1926. Are lamps.-Horizontal carbons are suspended from roller carriages c running on horizontal rods d. Two or more pairs of carbons, adapted for connection either in series or parallel or in parallel series, may be arranged side-by-side and all adjusted simultaneously so that the arcs are maintained in a constant position relatively to the lamp or its reflector. The carbons a<1>, a<2> are supported by screw-operated clamps b secured to the roller carriages c. The horizontal guides d are preferably square rods. Bell-cranks f connect the carriages c of each pair of carbons to a separate vertically-sliding frame g. On each frame g is a vertical rod h engaged by a ring clutch i. The clutches are linked to a single lever j, which is operated by hand or by a solenoid p and may be provided with an adjustable stop k and an adjustable counterweight j<1>. Hand-operation may be effected by means of a Bowden cable. Terminals o<1>, o<2> connected to the carbons allow of the alteration of the circuit arrangements according to the voltage available and the number of arcs required. The lamp is suitable for electrotherapeutic purposes, kinematograph film making, photo process work, copying, &c.
Patent GB-1427721-A (GB)
Title: Shot concentrators for shotgun cartridges
IPC: F42B7/04
Filed: 1972-03-01
Abstract: 1427721 Shot concentrators IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 15 Feb 1973 [1 March 1972] 9544/72 Heading F3A A shot concentrator 10 comprises a cupshaped member formed from a cellular material which will collapse under pressure of shot after firing, e.g. polyurethane or polystyrene. Optional slits or grooves in the wall of the concentrator facilitate the wall opening into a petal formation upon discharge from a gun. The density of the material of the wall varies from one end to the other. The concentrator is used in conjunction with a gas-sealing disc 20 or, alternatively, has a flame-resistant layer deposited directly on its rear face to provide a gas-sealing skirt. The concentrator is made by disposing foamable material in a mould cavity and heating the mould to cause foaming.